Dumping unit fob



- lNov. 17,1925

' H. PoUNDr-:R

DHPING UNIT FOR MOTOR TRUCKS i Re.1'6,212 n H. POUNDER DURING UNIT FOR lMOTOR TRUCKS v origina; 'Fld July i7. i924 s sheets-snoei, :s l

Reissued Nov. 17, 1925.

fn.; '15.212, UNITED STATES' PATENT OFFICE;-

HARRY POUNDR, OF GALION, OHIO, ASSIGNOR TO PERFECTION STEEL BODY'JONI- *I PANY, OF GALION, OHIO.

numrmo U'Nrrron Moron '.rnUcxs.

original no. 1,529,374, dated March 1o, 1925. srmljnb. 726,531, med-:111117. 11924.." Ap151leatioa 'for reissue led April 27,

l To all whom may concern:

Be Ait known that I, HARRY POUNDER, a citizen of the United States, residing at Galion, in the county of Crawford and State of Ohio, have invented certain new and use- 'ful Improvements in Dumping Units for Motor Trucks,'of which the following is a specification.

This invention relates to an improved dumping `unit for motor trucks and seeksto provlde a complete unit of this character which may beA readily attached lto any ordinary truck chassis to form a dumping truck.

The invention further seeks to provide a dumping unit embodying a novel dumping mechanism' incorporating a rigid unitary base frame mounting the gears employed.

' And the invention still. further-seeks to provide a mechanism embodying a combined lifting wheel andarm so incorporated that during the initial upward travel of the arm, when the load is the greatest, the body will be lifted slowly while, as the body is tilted, a progressively accelerated movement will be imparted thereto.

Other and' incidental hereinafter. Y Y

In the accompanying drawings: Figure 1 is aperspectivemview showing my improved dumpmg unit applied to a conventional motor truck, Fig. 2 is a. fragmentary side elevation, the

hody being shown elevated in dotted lines,

, Fig. 3 is a horizontal sectional view showing the base frame of the unit and the lifting gears employed, and

.Fig 4 is a detail sectional view on the line 4-4 of Fig. 2, looking inthe direction indicated by the arrows.

In carrylng the invention into effect, I employ an oblong base frame including a pair of angle shaped side bars 10 having div'erging rear end portions llfprovided with parallel terminals 12 and connecting said side bars is a front cross bar 13 at the forward ends of the side bars, and a. rear cross objects will appear bar 14 at the forward ends of the diverging portions 11 of said side bars. Extending beat the 'right @fthe frame is 'axadf laterally projecting angle bracket,17.v ,-Theparts of the base frame, as thusdescribed,;fare prefsjj;

erably welded together: 'to prodlice. a rigid integral structure and, if desiredQ-'thejoints between the parts Ina be reinforced by` rivets or other suitable astening devices. In the drawings, I have shown the present unit in connectlon with a conventional imotor truck. The side bars of the chassis frame are indicated at 18 and, as will be observed, the base frame of the unit is arran ed .tov overlie the chassis frame longitu 'nally thereof, resting upon the rear end portions of the bars 18. The'front cross bar 13 of the base frame ofthe unit is considerably longer than the rear cross bar 14 to` over'- hang the bars 18, supporting the base frame at its forward end, and it is nowto be particularly observed that the forward end portions ofthe bars 10 are spaced a less distance apart than the bars 18 of the chassis frame softhat the diverging rear end portions 11 'of' the bars 10 thus cross the bars 181 for supporting the base frame near its rear end. Engaging the bottom flanges of the bars 18 are, as shown in Fig. 4, hooks 19 and extending through the ends of the bars 13 and through said hooks are bolts 20 rigidly sebearings is a cross shaft 24. yPivotal y supported bysa'id shaft is a body 25 to the bottom of which is secured a pair of longitudinal side bars 26 as Well as a pair of paral- 1 y lel center bars 27 reinforcing the body.l

lBolted or otherwise secured to the bars 26 near the rear end of thejbody are bearing brackets 28 accommodating the ends of the shaft 24 so that the body vis thus mounted to tilt upwardl and rearwardly about the axis of said sha Fixed to the bottom 0f the body at its forward end is a saddle plate'lOl 29 disposed to cooperate with the rest 16 fors.A supporting the bod in horizontal position and formed on the p ate at its ends are downT Y et is a pawl 47.

turned lugs to coact with the sides of the rest for limiting the forward end of the body against transverse movement.

Journaled through the bracket 17 and through the side bar 10 at the right of the base frame of the unit, as well as through the center bar 15 is a power shaft 31 on which is fixed a gear 32 and journaled through said side bar and through the center bar in the rear of the power shaft is a shaft 33 on which is fixed a large gear 34 meshing with the gear 32. Integral with the gear 34 is a small gear 35. Journaled through the bars 10 and 15 in the rear of the shaft 33 is a shaft 36 on which is fixed a large gear 37 meshlng lwith Athe gear 35 and'fixed to said shaft in spaced relation to the gear 37 is a small gear 38. Journaled through the side bar 10 at the left of the base frame and through the center bar 15 is a shaft 39 and fixed to said shaft is a combined lifting wheel and arm, the wheel being indicated at 40 and the armat 41. The wheel and arm are integrally formed as a unitary structure and, as will be observed, the wheel is provided with gear teeth 42 throughout a portion of its periphery to mesh with the gears 38. Extending at opposite sides of the arm 41 are links 43 pivotally connected at their lower ends to the free end of the arm and at their upper ends lto the forward ends of the center bars 27 of the body 25. Fixed upon the outer end of the power shaft 31 is a ratchet 44, the Ahub of which is recessed to form a squared socket 45 for a hand crank, as conventionally illustrated in dotted lines in Fig. 1, at 46, and pivoted upon the bracket 17 to coact with said ratch- Normally, the arm 41 is disposed to project downwardly and slightly forwardly so that, as will now be seen in view of the foregoing, the crank 46 may be operated for turnlng lthe shaft 31 and rotating the wheel 40, when the arm will, as shown in Fig. 1, be swung up for lifting the forward end of the body 25 and tilting the body rearwardly to dump the contentsv thereof, the pawl 47 being enga eable with the ratchet 44 for holding the body elevated. In this connection, attention is directed to the fact that during the initial upward movement of the body, when the load is heaviest, the upward travel imparted to the body for each turn of the cran will be relatively small while as the arm 41 a proaches the horizontal and the load is lig tened by the elevation of the forward end of the body, the upward travel of `the body will progressively increase at each turn of the crank. Accord,- ingly, little difficulty will be experienced in dumping while the dumping operation may be accomplished with reasonable quickness.

Furthermore, attention is directed to the factA that, when the arm 41 is, as shown in Fig. 2, presented downwardly, the combined lifting wheel and arm will serve to lock the body in horizontal'position, the body bearing at its forward end against the rest 16. Accidental upward tilting of the body such as might be brought about by joltlng incident tothe passage of the truck over rough roads or streets, willthus be prevented.

Having thus described the invention, I claim:

l. In a dumping unit for motor trucks, a base frame including side bars having parallel forward end portions and divergin rear end portions provided with paralle terminals, a cross bar extending between the forward ends of the side bars, a second cross bar extending between the side bars near the forward ends of the diverging portions thereof, a rest upstanding from the forward ends of said side bars, the several bars of the frame and said rest being integrally united to form a rigid unitary frame structure for attachment to a truck chassis, brackets mounted upon said terminals of the side bars, a body normally resting at its forward end upon said rest in horizontal position, brackets carried by the body, a cross shaft coacting with said first and second-mentioned brackets pivotally mountin the body, and means carried by the base rame for tilting the body.

2. The combination with a truck chassis including a frame having side bars, and a body wider than said frame, of a base frame including side bars having forward end portions extending longitudinally of said first-mentioned side bars within the lines thereof and angularly disposed rear end portions diverging across the side bars of the chassis frame toward the lines of the sides of the body, means supporting the baseY frame at its forward end upon the side bars of the chassis frame, the diverging rear end portions of the side bars of the base frame resting upon the side bars of the chassis frame and su porting the rear end portion of the base rame, hinge brackets carried by the diverging rear end portions of the latter side bars, and hinge brackets carried by the body adjacent the sides thereof and plvotally connected with said first-mentioned brackets for swingingly supporting the body upon the base frame.

3. The combination with a truck chassis including Aa. frame having side bars, and a body wider than the chassis frame, of a base frame havin forward portions extending longitu inally of the chassis frame within the lines thereof and angularly disposed rear portions diverging across the sides of the chassis frame toward the. lines of the sides of the body, means for securing the base frame at its V- front end upon the sides of the,vv`v chassis frame, the dwerging rear portions of the base frame resting upon and 'supported by the sides of the chassis frame, lmeans for mounting the body upon the rear end of the base rame for rocking movement, and means mounted on the base framev and connected with the forward portion of the body for tilting the body.

4. In a dumpmg unit for motorv trucks, a base frame having opposite end portions extended laterally to engage the side bars of a truck chassis, and having the intermediate portion narrow to come between the said side bars, elements at opposite ends of the frame to yform a -front rest and rear bearing members, a body tiltably mounted upon the bearn members and normally in engagement wit the said rest, a train of gearing mounted upon the intermediate nar- .row portion of the frame between the rest members and including a large and bearin gear whee having an arm projected prising a base rame including parallel side I bars and outwardly and rearwardly ydisposed members, connecting means between the side bars including a front cross bar projecting at op osite ends beyond the side bars to act joint y with the outwardly and rearwardly inclined members to supportl the frame upon the side b ars of a truck chassis, a rest at the frontend of the base frame, bearing members at 'the rear end of thebase frame, a bracket projecting laterally from a side bar of the frame, and a. train of caring mounted upon the base frame and inc uding a large gear wheel having an arm projected radially therefrom and a power shaft mounted in the said bracket and the adjacent side bar of the base frame.

In testimony whereof, vI hereto set my hand. v

HARRY PONDER. l 

